CN202975965U - Direct current voltage converting circuit - Google Patents
Direct current voltage converting circuit Download PDFInfo
- Publication number
- CN202975965U CN202975965U CN 201220741375 CN201220741375U CN202975965U CN 202975965 U CN202975965 U CN 202975965U CN 201220741375 CN201220741375 CN 201220741375 CN 201220741375 U CN201220741375 U CN 201220741375U CN 202975965 U CN202975965 U CN 202975965U
- Authority
- CN
- China
- Prior art keywords
- resistance
- voltage
- resistor
- level signal
- control chip
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Dc-Dc Converters (AREA)
Abstract
A direct current voltage converting circuit comprises a main control chip, a main voltage converting module, a first resistor, a second resistor, a third resistor and a fourth resistor, wherein a first general purpose input/output (GPIO) pin of the main control chip is grounded through the first resistor and the second resistor in sequence, a second GPIO pin of the main control chip is connected with a node through the second resistor, and the node is placed between the first resistor and the third resistor. The feedback end of the main voltage converting module is connected with the voltage output end of the main voltage converting module through the fourth resistor, and the feedback end of the main voltage converting module is grounded through the third resistor. According to the direct current voltage converting circuit, different control signals are output by the GPIO pins of the main control chip only, feedback voltage can be regulated, and output voltage of a direct current converting module is further changed. The direct current voltage converting circuit is simple, high in efficiency and low in cost.
Description
Technical field
The utility model relates to a kind of DC voltage converting circuit.
Background technology
DC voltage converting circuit has been applied to industrial panel computer as driving power, and different applied environments is different to the voltage request of direct-current power supply converting circuit output, therefore, often needing according to customer requirement redesign circuit, cost is high, and efficient is low.
The utility model content
For the deficiencies in the prior art, the purpose of this utility model is intended to provide a kind of DC voltage converting circuit of adjustable output voltage, and its circuit is simple, and cost is low.
For achieving the above object, the utility model adopts following technical scheme:
A kind of DC voltage converting circuit, it comprises main control chip, principal voltage modular converter, the first resistance, the second resistance, the 3rd resistance and the 4th resistance;
The one GPIO pin of main control chip is successively by the first resistance and the second resistance eutral grounding, the 2nd GPIO pin of main control chip is connected in node between the first resistance and the 3rd resistance by the second resistance, the feedback end of principal voltage modular converter connects its voltage output end by the 4th resistance, and the feedback end of principal voltage modular converter is also by the 3rd resistance eutral grounding.
The one GPIO pin of Master control chip and the 2nd GPIO pin are used for first to fourth group of control signal of output, wherein, first group of control signal is high level signal and high level signal, second group of control signal is low level signal and high level signal, the 3rd group of control signal is high level signal and low level signal, and the 4th group of control signal is low level signal and low level signal.
The beneficial effects of the utility model are as follows:
Above-mentioned utility model only need be by the different control signal of GPIO pin output of main control chip, the size that can regulate feedback voltage, and then the output voltage of change DC voltage modular converter, and circuit is simple, and efficient is high, and cost is low.
Description of drawings
Fig. 1 is the circuit diagram of the better embodiment of the utility model DC voltage converting circuit.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described further:
See also Fig. 1, the utility model relates to a kind of DC voltage converting circuit, and its better embodiment comprises that main control chip 10, principal voltage modular converter 20, resistance R 1 are to R4.
The GPIO(General Purpose Input Output of main control chip 10, universal input/output) pin G1 is successively by resistance R 1 and resistance R 3 ground connection, the GPIO pin G2 of main control chip 10 is connected in node between resistance R 1 and resistance R 3 by resistance R 2, the feedback end FB of principal voltage modular converter 20 connects its voltage output end Vout by resistance R 4, and the feedback end FB of principal voltage modular converter 20 is also by resistance R 3 ground connection.
The circuit of this principal voltage modular converter 20 and function are the same with existing DC voltage converting circuit, and the voltage transitions that namely is used for input end Vin input is the voltage of output end vo ut output.
The pin G1 of this main control chip 10 and G2 are used for first to fourth group of control signal of output with the feedback voltage Vfb of the backfeed loop of adjusting principal voltage module 10, wherein, first group of control signal is high level signal and high level signal, second group of control signal is low level signal and high level signal, the 3rd group of control signal is high level signal and low level signal, and the 4th group of control signal is low level signal and low level signal.
When the pin G1 of this main control chip 10 and first group of control signal of G2 output, when namely pin G1 and G2 all exported high level signal, the feedback voltage Vfb of main control chip 10 was the voltage of resistance R 3.
When the pin G1 of this main control chip 10 and second group of control signal of G2 output, i.e. pin G1 and G2 output low level signal and high level signal respectively, the feedback voltage Vfb of main control chip 10 is the voltage of the parallel resistance of resistance R 1 and R3.
When the pin G1 of this main control chip 10 and the 3rd group of control signal of G2 output, namely pin G1 and G2 export respectively high level signal and low level signal, and the feedback voltage Vfb of main control chip 10 is the voltage of the parallel resistance of resistance R 2 and R3.
When the pin G1 of this main control chip 10 and the 4th group of control signal of G2 output, i.e. the equal output low level signal of pin G1 and G2, the feedback voltage Vfb of main control chip 10 is the voltage of the parallel resistance of resistance R 1 to R3.
From the above, the utility model only need be by the different control signal of GPIO pin output of main control chip, the size that can regulate feedback voltage, and then the output voltage of change DC voltage modular converter, and circuit is simple, and efficient is high, and cost is low.
For a person skilled in the art, can make other various corresponding changes and distortion according to technical scheme described above and design, and these all changes and the distortion all should belong to the protection domain of the utility model claim within.
Claims (2)
1. DC voltage converting circuit, it is characterized in that: it comprises main control chip, principal voltage modular converter, the first resistance, the second resistance, the 3rd resistance and the 4th resistance;
The one GPIO pin of main control chip is successively by the first resistance and the second resistance eutral grounding, the 2nd GPIO pin of main control chip is connected in node between the first resistance and the 3rd resistance by the second resistance, the feedback end of principal voltage modular converter connects its voltage output end by the 4th resistance, and the feedback end of principal voltage modular converter is also by the 3rd resistance eutral grounding.
2. DC voltage converting circuit as claimed in claim 1, it is characterized in that: a GPIO pin of Master control chip and the 2nd GPIO pin are used for first to fourth group of control signal of output, wherein, first group of control signal is high level signal and high level signal, second group of control signal is low level signal and high level signal, the 3rd group of control signal is high level signal and low level signal, and the 4th group of control signal is low level signal and low level signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220741375 CN202975965U (en) | 2012-12-30 | 2012-12-30 | Direct current voltage converting circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220741375 CN202975965U (en) | 2012-12-30 | 2012-12-30 | Direct current voltage converting circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202975965U true CN202975965U (en) | 2013-06-05 |
Family
ID=48517017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220741375 Expired - Fee Related CN202975965U (en) | 2012-12-30 | 2012-12-30 | Direct current voltage converting circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202975965U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108733189A (en) * | 2018-05-07 | 2018-11-02 | 曙光信息产业股份有限公司 | A kind of voltage regulating device and method |
| CN113193747A (en) * | 2020-01-14 | 2021-07-30 | 江苏东海半导体科技有限公司 | Switch tube boosting module |
-
2012
- 2012-12-30 CN CN 201220741375 patent/CN202975965U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108733189A (en) * | 2018-05-07 | 2018-11-02 | 曙光信息产业股份有限公司 | A kind of voltage regulating device and method |
| CN113193747A (en) * | 2020-01-14 | 2021-07-30 | 江苏东海半导体科技有限公司 | Switch tube boosting module |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202166908U (en) | Combination structure of low dropout regulator (LDO) and direct-current (DC) to direct-current (DC) converter | |
| CN202975965U (en) | Direct current voltage converting circuit | |
| CN203574540U (en) | Direct current voltage boosting circuit and electronic device | |
| CN103647447B (en) | The supply unit of a kind of electric energy table communication module | |
| CN204290709U (en) | Power supply circuit | |
| CN203984240U (en) | A kind of power supply circuits of field programmable gate array | |
| CN205986620U (en) | Numerical control DC DC converting circuit | |
| CN203250233U (en) | Direct current voltage reduction circuit and electronic products | |
| CN203984247U (en) | A kind of Novel DC multilevel decompression voltage stabilizing circuit | |
| CN103117654B (en) | Active power-factor correction circuit and related controller | |
| CN202978699U (en) | Multiple-voltage switching device | |
| CN101630898A (en) | Circuit for regulating and controlling output power of power supply | |
| CN205986622U (en) | DC of parallelly connected variable components and parts DC converting circuit | |
| CN203554742U (en) | LED drive circuit | |
| CN102843034A (en) | DC-DC booster circuit | |
| CN204290706U (en) | The power supply that a kind of RS232 signal drives | |
| CN204707031U (en) | The multichannel boosting of a kind of frequency converter, reduction voltage circuit | |
| CN203942442U (en) | The high DC-DC chip of electrical stability on a kind of multiplexing enable pin | |
| CN207835351U (en) | A kind of simple negative conversion circuit | |
| CN217360612U (en) | Elevator analog quantity output circuit | |
| CN200997650Y (en) | Power-supply circuit and TV-set therewith | |
| CN221531299U (en) | Quantum gravity is power control device for appearance | |
| CN208351313U (en) | A kind of analog output equipment of PLC host | |
| CN202535267U (en) | Digital television set top box power conversion circuit | |
| CN208508775U (en) | A kind of frequency converter DC injection braking module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130605 Termination date: 20161230 |